ALV GRID Complete Example With Toolbar Buttons Using Class.docx

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This example shows the ALV grid with flights using class methods.The ALV grid shows the flight details and after selecting a line a change

button can be pushed to display a change screen [stage:screen 200]. After the changes have been saved, the ALV grid screen is displayed

again, and the grid is updated with the changes. The ALV Grid has traffic lights and colors for showing updates.The table data is also updated

with the changes.

The example shows:

How to setup the ALV grid

How to set focus to the grid

How to set the title of the grid

How to allow a user to save and reuse a grid layout (Variant)

How to customize the ALV grid toolbar

Refresh the grid

Set and get row selection and read in contents

Make and exception field (Traffic light)

Coloring a line

Steps:

Create screen 100 with the ALV grid. Remember to include an exit button

Add a change button to the ALV grid toolbar

Create screen 200 the Change screen

SCREEN 100 CREATION :

1. Create a Normal Screen 100.

2. In the layout create a Custom Control named 'ALV_CONTAINER'.

3. Create a button named 'EXIT' with Function code 'EXIT'.

SCREEN 200 CREATION :

1. Create a normal screen 200.

2. In the layout press F6.

3. Enter the Field Name = 'G_SCREEN200' and then Get From Program.

[stage:Save the main program prior to using the field G_SCREEN200 as G_SCREEN200 is declared in the main program. ]

4. Create The EXIT200 and SAVE buttons with function codes and the text fields for

the corresponding input/output fields .

Fcode for EXIT200 = 'EXIT200' and SAVE = 'SAVE200'.

Note : zsflight is a copy of table sflight table with its data.

THE CODE : REPORT sapmz_hf_alv_grid.

TYPE-POOLS : icon , slis.TABLES : zsflight.

CLASS lcl_event_receiver DEFINITION DEFERRED.

TYPES: BEGIN OF st_zsflight. INCLUDE STRUCTURE zsflight.* FIELD FOR TRAFFIC LIGHTTYPES: traffic_light TYPE c.* FIELD FOR LINE COLORTYPES: line_color(4) TYPE c.TYPES: END OF st_zsflight.

TYPES: tt_zsflight TYPE STANDARD TABLE OF st_zsflight.

DATA: gi_zsflight TYPE tt_zsflight.

*--------------------------------------------------------------------* G L O B A L D A T A*--------------------------------------------------------------------DATA: ok_code LIKE sy-ucomm,* WORK AREA FOR INTERNAL TABLE g_wa_zsflight TYPE st_zsflight,* ALV control: LAYOUT STRUCTURE gs_layout TYPE lvc_s_layo.

* DECLARE REFERENCE VARIABLES TO THE ALV GRID AND THE CONTAINERDATA: go_grid TYPE REF TO cl_gui_alv_grid,

go_custom_container TYPE REF TO cl_gui_custom_container, o_event_receiver TYPE REF TO lcl_event_receiver.

DATA:* WORK AREA FOR SCREEN 200 g_screen200 LIKE zsflight .

* DATA FOR STORING INFORMATION ABOUT SELECTED ROWS IN THE GRIDDATA:* INTERNAL TABLE gi_index_rows TYPE lvc_t_row,* INFORMATION ABOUT ROW g_selected_row LIKE lvc_s_row.

*--------------------------------------------------------------------* C L A S S E S*--------------------------------------------------------------------CLASS lcl_event_receiver DEFINITION. PUBLIC SECTION. METHODS: handle_toolbar FOR EVENT toolbar OF cl_gui_alv_grid IMPORTING e_object e_interactive,

handle_user_command FOR EVENT user_command OF cl_gui_alv_grid IMPORTING e_ucomm.

ENDCLASS. "lcl_event_receiver DEFINITION *---------------------------------------------------------------------** CLASS lcl_event_receiver IMPLEMENTATION*---------------------------------------------------------------------*CLASS lcl_event_receiver IMPLEMENTATION.

METHOD handle_toolbar.* EVENT HANDLER METHOD FOR EVENT TOOLBAR.

CONSTANTS:* CONSTANTS FOR BUTTON TYPE c_button_normal TYPE i VALUE 0, c_menu_and_default_button TYPE i VALUE 1, c_menu TYPE i VALUE 2, c_separator TYPE i VALUE 3, c_radio_button TYPE i VALUE 4, c_checkbox TYPE i VALUE 5, c_menu_entry TYPE i VALUE 6.

DATA: ls_toolbar TYPE stb_button.

* APPEND SEPARATOR TO THE NORMAL TOOLBAR CLEAR ls_toolbar. MOVE c_separator TO ls_toolbar-butn_type.. APPEND ls_toolbar TO e_object->mt_toolbar.

* APPEND A NEW BUTTON TO THE TOOLBAR . USE E_OBJECT OF EVENT TOOLBAR .* E_OBJECT IS OF TYPE CL_ALV_EVENT_TOOLBAR_SET.* THIS CLASS HAS ONE ATTRIBUTE MT_TOOLBAR WHICH IS OF TABLE TYPE* TTB_BUTTON. THE STRUCTURE IS STB_BUTTON

CLEAR ls_toolbar. MOVE 'CHANGE' TO ls_toolbar-function. MOVE icon_change TO ls_toolbar-icon. MOVE 'Change flight' TO ls_toolbar-quickinfo. MOVE 'Change' TO ls_toolbar-text. MOVE ' ' TO ls_toolbar-disabled. APPEND ls_toolbar TO e_object->mt_toolbar.*This code is for giving space in between two icons* CLEAR ls_toolbar.

* MOVE c_separator TO ls_toolbar-butn_type..* APPEND ls_toolbar TO e_object->mt_toolbar.*** CLEAR ls_toolbar.* MOVE 'SAVE' TO ls_toolbar-function.* MOVE icon_display_text TO ls_toolbar-icon.* MOVE 'Display flight' TO ls_toolbar-quickinfo.* MOVE 'Display' TO ls_toolbar-text.* MOVE ' ' TO ls_toolbar-disabled.* APPEND ls_toolbar TO e_object->mt_toolbar.

ENDMETHOD. "handle_toolbar

METHOD handle_user_command.* HANDLE OWN FUNCTIONS IN THE TOOLBAR CASE e_ucomm. WHEN 'CHANGE'. PERFORM change_flight. ENDCASE. ENDMETHOD. "handle_user_command

ENDCLASS. "lcl_event_receiver IMPLEMENTATION

*--------------------------------------------------------------------* S T A R T - O F - S E L E C T I O N.*--------------------------------------------------------------------START-OF-SELECTION. SET SCREEN '100'.

*&---------------------------------------------------------------------**& Module USER_COMMAND_0100 INPUT*&---------------------------------------------------------------------*MODULE user_command_0100 INPUT. CASE ok_code. WHEN 'EXIT'. LEAVE TO SCREEN 0. ENDCASE.ENDMODULE. " USER_COMMAND_0100 INPUT

*&---------------------------------------------------------------------**& Module STATUS_0100 OUTPUT*&---------------------------------------------------------------------*MODULE status_0100 OUTPUT. DATA:* FOR PARAMETER 'IS_VARIANT' THAT IS SAID TO SET UP OPTIONS FOR STORING* THE GRID LAYOUT AS A VARIANT IN METHOD SET_TABLE_FOR_FIRST_DISPLAY . l_layout TYPE disvariant,

* UTLITY FIELD l_lines TYPE i.

* AFTER RETURNING FROM SCREEN 200 THE LINE THAT WAS SELECTED BEFORE GOING TO SCREEN 200, SHOULD BE SELECTED AGAIN* THE TABLE GI_INDEX_ROWS WAS THE OUTPUT TABLE FROM THE GET_SELECTED_ROWS METHOD IN FORM CHANGE_FLIGHT.

DESCRIBE TABLE gi_index_rows LINES l_lines. IF l_lines > 0. CALL METHOD go_grid->set_selected_rows EXPORTING it_index_rows = gi_index_rows.

CALL METHOD cl_gui_cfw=>flush.

REFRESH gi_index_rows. ENDIF.

* READ DATA AND CREATE OBJECTS IF go_custom_container IS INITIAL.* READ DATA FROM DATABASE TABLE PERFORM get_data.

* CREATE OBJECTS FOR CONTAINER AND ALV GRID CREATE OBJECT go_custom_container EXPORTING container_name = 'ALV_CONTAINER'.

CREATE OBJECT go_grid EXPORTING i_parent = go_custom_container.

* CREATE OBJECT FOR EVENT_RECEIVER CLASS AND SET HANDLERS

CREATE OBJECT o_event_receiver. SET HANDLER o_event_receiver->handle_user_command FOR go_grid. SET HANDLER o_event_receiver->handle_toolbar FOR go_grid.

* LAYOUT (VARIANT) FOR ALV grid l_layout-report = sy-repid. "Layout to report

*---------------------------------------------------------------* SETUP THE GRID LAYOUT USING A VARIABLE OF STRUCTURE LVC_S_LAYO*---------------------------------------------------------------

* SET GRID TITLE gs_layout-grid_title = 'Flights Display'.

* SELECTION MODE - SINGLE ROW WITHOUT BUTTONS* (THIS IS THE DEFAULT MODE) gs_layout-sel_mode = 'B'.

* NAME OF THE EXCEPTION FIELD (TRAFFIC LIGHT FIELD) AND THE COLOR* FIELD + SET THE EXCEPTION AND COLOR FIELD OF THE TABLE gs_layout-excp_fname = 'TRAFFIC_LIGHT'. gs_layout-info_fname = 'LINE_COLOR'.

LOOP AT gi_zsflight INTO g_wa_zsflight. IF g_wa_zsflight-paymentsum < 100000.

* VALUE OF TRAFFIC LIGHT FIELD . g_wa_zsflight-traffic_light = '1'.

* VALUE OF COLOR FIELD :* C = Color, 6=Color 1=Intesified on, 0: Inverse display off g_wa_zsflight-line_color = 'C610'. ELSEIF g_wa_zsflight-paymentsum => 100000 AND g_wa_zsflight-paymentsum < 1000000. g_wa_zsflight-traffic_light = '2'. ELSE. g_wa_zsflight-traffic_light = '3'. ENDIF. MODIFY gi_zsflight FROM g_wa_zsflight. ENDLOOP.

* GRID SETUP FOR FIRST DISPLAY CALL METHOD go_grid->set_table_for_first_display EXPORTING i_structure_name = 'ZSFLIGHT' is_variant = l_layout i_save = 'A' is_layout = gs_layout CHANGING it_outtab = gi_zsflight.

*-- END OF GRID SETUP -------------------------------------------

* RAISE EVENT TOOLBAR TO SHOW THE MODIFIED TOOLBAR CALL METHOD go_grid->set_toolbar_interactive.

* SET FOCUS TO THE GRID . THIS IS NOT NECESSERY IN THIS EXAMPLE AS THERE IS ONLY ONE CONTROL IN THE SCREEN.* CALL METHOD cl_gui_control=>set_focus EXPORTING control = go_grid.

ENDIF.ENDMODULE. " STATUS_0100 OUTPUT

*&---------------------------------------------------------------------**& Module USER_COMMAND_0201 INPUT*&---------------------------------------------------------------------** text*----------------------------------------------------------------------*MODULE user_command_0200 INPUT. CASE ok_code. WHEN 'EXIT200'. LEAVE TO SCREEN 100. WHEN'SAVE'. PERFORM save_changes. ENDCASE.

ENDMODULE. " USER_COMMAND_0201 INPUT

*&---------------------------------------------------------------------**& Form get_data*&---------------------------------------------------------------------*

* text*----------------------------------------------------------------------*FORM get_data.* Read data from table ZSFLIGHT SELECT * FROM zsflight INTO TABLE gi_zsflight.ENDFORM. " load_data_into_grid

*&---------------------------------------------------------------------**& Form change_flight*&---------------------------------------------------------------------** READS THE CONTENTS OF THE SELECTED ROW IN THE GRID AND TRANSFERS* THE DATA TO SCREEN 200 , WHERE IT CAN BE CHANGED AND SAVED .*----------------------------------------------------------------------*FORM change_flight. DATA:l_lines TYPE i.

REFRESH gi_index_rows. CLEAR g_selected_row.

* READ INDEX OF SELECTED ROWS CALL METHOD go_grid->get_selected_rows IMPORTING

et_index_rows = gi_index_rows.

* CHECK IF ANY ROW ARE SELECTED AT ALL .IF NOT TABLE GI_INDEX_ROWS WILL BE EMPTY DESCRIBE TABLE gi_index_rows LINES l_lines. IF l_lines = 0.

CALL FUNCTION 'POPUP_TO_CONFIRM' EXPORTING titlebar = 'POP UP WINDOW'* DIAGNOSE_OBJECT = ' ' text_question = 'You must choose a line' text_button_1 = 'YES' "'Ja'(001) icon_button_1 = 'ICON_OKAY' text_button_2 = 'NO' "'Nein'(002) icon_button_2 = 'ICON_CANCEL' default_button = '1'* DISPLAY_CANCEL_BUTTON = 'X'* USERDEFINED_F1_HELP = ' '* START_COLUMN = 25* START_ROW = 6 popup_type = 'ICON_MESSAGE_INFORMATION'* IV_QUICKINFO_BUTTON_1 = ' '* IV_QUICKINFO_BUTTON_2 = ' '* IMPORTING* ANSWER = ANSWER.* TABLES* PARAMETER = EXCEPTIONS text_not_found = 1 OTHERS = 2 . IF sy-subrc <> 0.* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4. ENDIF.

* CALL FUNCTION 'POPUP_TO_DISPLAY_TEXT'* EXPORTING* textline1 = 'You must choose a line'. EXIT. ENDIF.

** READ INDEXES OF SELECTED ROWS . IN THIS EXAMPLE ONLY ONE ROW CAN BE SELECTED AS WE ARE USING GS_LAYOUT-SEL_MODE = 'B',** SO IT IS ONLY NECESSARY TO READ THE FIRST ENTRY IN TABLE GI_INDEX_ROWS** LOOP AT gi_index_rows INTO g_selected_row. IF sy-tabix = 1. READ TABLE gi_zsflight INDEX g_selected_row-index INTO g_wa_zsflight. ENDIF. ENDLOOP.** TRANSFER DATA FROM THE SELECTED ROW TO SCREEN 200 AND SHOW SCREEN 200 CLEAR g_screen200. MOVE-CORRESPONDING g_wa_zsflight TO g_screen200. LEAVE TO SCREEN '200'.

ENDFORM. " change_flight

*&---------------------------------------------------------------------**& Form save_changes*&---------------------------------------------------------------------** CHANGES MADE IN SCREEN 200 ARE WRITTEN TO THE DATABASE TABLE ZSFLIGHT,* AND TO THE GRID TABLE GI_ZSFLIGHT, AND THE GRID IS UPDATED WITH* METHOD REFRESH_TABLE_DISPLAY TO DISPLAY THE CHANGES.*----------------------------------------------------------------------*

FORM save_changes. DATA: l_traffic_light TYPE c.* UPDATE TRAFFIC LIGHT FIELD

* UPDATE DATABASE TABLE MODIFY zsflight FROM g_screen200.

* UPDATE GRID TABLE , TRAFFIC LIGHT FIELD AND COLOR FIELD.* NOTE THAT IT IS NECESSERY TO USE STRUCTURE G_WA_ZSFLIGHT* FOR THE UPDATE , AS THE SCREEN STRUCTURE DOESNOT HAVE A TRAFFIC LIGHT FIELD

MOVE-CORRESPONDING g_screen200 TO g_wa_zsflight. IF g_wa_zsflight-paymentsum < 100000. g_wa_zsflight-traffic_light = '1'.

* C = Color, 6=Color 1=Intesified on, 0: Inverse display off g_wa_zsflight-line_color = 'C610'. ELSEIF g_wa_zsflight-paymentsum => 100000 AND g_wa_zsflight-paymentsum < 1000000. g_wa_zsflight-traffic_light = '2'. CLEAR g_wa_zsflight-line_color. ELSE. g_wa_zsflight-traffic_light = '3'. CLEAR g_wa_zsflight-line_color. ENDIF.

MODIFY gi_zsflight INDEX g_selected_row-index FROM g_wa_zsflight.

* REFRESH GRID CALL METHOD go_grid->refresh_table_display. CALL METHOD cl_gui_cfw=>flush.

LEAVE TO SCREEN '100'.ENDFORM. " save_changes

ALV GRID Complete Example With Toolbar Buttons Using Class.docx

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